Ubuntu 16.04 LTS / 18.04 LTS / 19.10 : QEMU vulnerabilities (USN-4283-1)

2020-02-19T00:00:00
ID UBUNTU_USN-4283-1.NASL
Type nessus
Reporter Ubuntu Security Notice (C) 2020 Canonical, Inc. / NASL script (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-02-19T00:00:00

Description

Felipe Franciosi, Raphael Norwitz, and Peter Turschmid discovered that QEMU incorrectly handled iSCSI server responses. A remote attacker in control of the iSCSI server could use this issue to cause QEMU to crash, leading to a denial of service, or possibly execute arbitrary code. (CVE-2020-1711)

It was discovered that the QEMU libslirp component incorrectly handled memory. A remote attacker could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-7039, CVE-2020-8608).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4283-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(133796);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/09/17");

  script_cve_id("CVE-2020-1711", "CVE-2020-7039", "CVE-2020-8608");
  script_xref(name:"USN", value:"4283-1");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 19.10 : QEMU vulnerabilities (USN-4283-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis",
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description",
    value:
"Felipe Franciosi, Raphael Norwitz, and Peter Turschmid discovered that
QEMU incorrectly handled iSCSI server responses. A remote attacker in
control of the iSCSI server could use this issue to cause QEMU to
crash, leading to a denial of service, or possibly execute arbitrary
code. (CVE-2020-1711)

It was discovered that the QEMU libslirp component incorrectly handled
memory. A remote attacker could use this issue to cause QEMU to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2020-7039, CVE-2020-8608).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://usn.ubuntu.com/4283-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-aarch64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-arm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-mips");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-ppc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-s390x");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-sparc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-x86");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:19.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/01/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/02/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/02/19");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2020 Canonical, Inc. / NASL script (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(16\.04|18\.04|19\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 16.04 / 18.04 / 19.10", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);

flag = 0;

if (ubuntu_check(osver:"16.04", pkgname:"qemu", pkgver:"1:2.5+dfsg-5ubuntu10.43")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"qemu-system", pkgver:"1:2.5+dfsg-5ubuntu10.43")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"qemu-system-aarch64", pkgver:"1:2.5+dfsg-5ubuntu10.43")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"qemu-system-arm", pkgver:"1:2.5+dfsg-5ubuntu10.43")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"qemu-system-mips", pkgver:"1:2.5+dfsg-5ubuntu10.43")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"qemu-system-ppc", pkgver:"1:2.5+dfsg-5ubuntu10.43")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"qemu-system-s390x", pkgver:"1:2.5+dfsg-5ubuntu10.43")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"qemu-system-sparc", pkgver:"1:2.5+dfsg-5ubuntu10.43")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"qemu-system-x86", pkgver:"1:2.5+dfsg-5ubuntu10.43")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"qemu", pkgver:"1:2.11+dfsg-1ubuntu7.23")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"qemu-system", pkgver:"1:2.11+dfsg-1ubuntu7.23")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"qemu-system-arm", pkgver:"1:2.11+dfsg-1ubuntu7.23")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"qemu-system-mips", pkgver:"1:2.11+dfsg-1ubuntu7.23")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"qemu-system-ppc", pkgver:"1:2.11+dfsg-1ubuntu7.23")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"qemu-system-s390x", pkgver:"1:2.11+dfsg-1ubuntu7.23")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"qemu-system-sparc", pkgver:"1:2.11+dfsg-1ubuntu7.23")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"qemu-system-x86", pkgver:"1:2.11+dfsg-1ubuntu7.23")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"qemu", pkgver:"1:4.0+dfsg-0ubuntu9.4")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"qemu-system", pkgver:"1:4.0+dfsg-0ubuntu9.4")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"qemu-system-arm", pkgver:"1:4.0+dfsg-0ubuntu9.4")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"qemu-system-mips", pkgver:"1:4.0+dfsg-0ubuntu9.4")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"qemu-system-ppc", pkgver:"1:4.0+dfsg-0ubuntu9.4")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"qemu-system-s390x", pkgver:"1:4.0+dfsg-0ubuntu9.4")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"qemu-system-sparc", pkgver:"1:4.0+dfsg-0ubuntu9.4")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"qemu-system-x86", pkgver:"1:4.0+dfsg-0ubuntu9.4")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu / qemu-system / qemu-system-aarch64 / qemu-system-arm / etc");
}